I'm planning on ugrading my 8500gt to something more powerful for gaming. I was thinking of getting a Radeon HD 4870 because from what i've read they have been getting good reviews, plus the price is affordable. However, i've been reading reviews on the Geforce GTX 260 (which is around the same price as the 4870) which has also been getting good reviews. Some people say it's on par with the 4870, some say it's better.
I think both are good buys and both will be good choices.. I would be looking @ brands now...
check some reviews, not all 4870's are created equal... some are realy loud. I prefer Evga, BFG and XFX.
Personaly, i would find the best deal between the 260 and 4870 and read some reviews on that particualar card to make sure its not a screamer. I would go with the 4870... it's just personal prefrence. (I have a 4870x2)
I would suggest the 4890 which is nearly the same price. If you don't know how to overclock you can get the XFX 4890 XT factory overclock for $199. It's actually not that much more then the non-overclock one now days.